Home / People / Peter GrinspoonCarnival uses marijuana detection dogs on some cruisesPeter GrinspoonSun, Jun 4WTF Carnival? Carnival Corporation @CarnivalPLC -- it's like a floating War on #Cannabis patients. Are there any medical #marijuana friendly cruises (or cruise lines that don't go out of their way to persecute patients?) https://t.co/9IDjY0lEeH291390Carnival Cruise Line is using drug detection dogs at embarkation on some cruises to search for marijuana and other drugs.Read More Discover Peter GrinspoonNewsAddictionCannabisDispensaryHealthOpioidsPsychedelicsScience